As always, from the Technical RollUp : March 2008 - Technical Rollup Mail - Platforms blog posting. I've removed all the KB article stuff and it is worth pointing out that towards the end of the list are all the docs associated with what has changed with Windows Vista SP1: Blogs and information Windows...
Having been on holiday, I did not look too far before posting my blog post on Vista SP1. Then while reading other peoples blog I discovered that there was some more excellent information out there. As always Susanne has published her communication which I am sure will be updated as more relevant information...